CHICAGO (AP) _ Roger Clemens left Game 1 of the World Series after two innings Saturday night because of a strained left hamstring, an injury that has bothered the Houston Astros' ace since early September.

Clemens allowed three runs and four hits over two innings against the Chicago White Sox, but left with the game tied 3-3.

The seven-time Cy Young Award winner threw 54 pitches _ 25 in the first inning and 29 in the second. He struck out one with no walks.

Wandy Rodriguez, a rookie left-hander who started during the regular season, replaced Clemens at the start of the third inning.

Clemens left a Sept. 3 game against St. Louis after five innings because of the hamstring, then went 1-2 his next three starts before skipping a start.